[Ndn-interest] Forwarding states impact on FIB
Lan Wang (lanwang)
lanwang at memphis.edu
Wed Sep 21 13:23:10 PDT 2016
On Sep 21, 2016, at 2:32 PM, Muhammad Hosain Abdollahi Sabet <mhasabet at gmail.com<mailto:mhasabet at gmail.com>> wrote:
Thanks! So if a face goes down, nlsr first updates local FIB, then it will advertise new LSA, right?
Is there api documentation (e.g. doxygen) for nlsr? Or some document similar to nfd developer guide? I'm want to see how nlsr cooperates with nfd.
The NLSR developers’ guide is at https://netwisdom.cs.memphis.edu/gitlab/vslehman/nlsr-docs/blob/master/nlsr-docs.pdf
We have an NLSR mailing list. If you are interested, you can subscribe to the list (see the last one on https://named-data.net/codebase/platform/support/mailing-lists/).
On Sep 21, 2016 8:48 PM, "Lan Wang (lanwang)" <lanwang at memphis.edu<mailto:lanwang at memphis.edu>> wrote:
NLSR subscribes to face change events. If a face goes down, the node with this face will generate a new adjacency LSA and every node recomputes their routes using this information.
On Sep 21, 2016, at 12:17 AM, Muhammad Hosain Abdollahi Sabet <mhasabet at gmail.com<mailto:mhasabet at gmail.com>> wrote:
Thanks. Taking NLSR as an example, how does it react to link failure technically? I'm not much of familiar with nlsr api and don't know what to look for.
On 21 Sep 2016 5:08 am, "Lan Wang (lanwang)" <lanwang at memphis.edu<mailto:lanwang at memphis.edu>> wrote:
The answer depends on the routing protocol. I assume RED means the link corresponding to the face is physically down. A typical dynamic routing protocol is likely to remove that face from the associated entry after the face remains RED for a period. But a static routing protocol that doesn’t react to link failures will not.
On Sep 20, 2016, at 5:57 PM, Muhammad Hosain Abdollahi Sabet <mhasabet at gmail.com<mailto:mhasabet at gmail.com>> wrote:
Regarding face colors(GREEN, YELLOW and RED) and their impact on routing, I wonder if there is any relation between those two. I know colors are taken into account by forwarding plane while FIB entries are taken care of by routing plane. My question is: If a face remains RED for a period, is it going to be an update in FIB with regard to delete that face from its associated entry? Since updating FIB typically comes from RIB, then I guess for such an update routing protocol should decide.
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